/*Слайдер
 * © Deemon*/
function Slider()
{
	this.sliders_count=1;
	this.sliders=[];
	/*Настройки по умолчанию*/
	this.default_props={
		/*Автопрокрутка*/
		'auto_slide':false,
		/*Время анимации одного слайда*/
		'slide_time':500,
		/*Вертикальная ориентация*/
		'vertical':false,
		/*Эфект карусели*/
		'carousel':false,
		/*подгружать данные на последнем слайде*/
		'ajax_load':false,
		/*Дополнительные параметры для отправки ajax запроса*/
		'ajax_params':{},
		/*Тип анимации*/
		'animation':'swing',

		/*Сис. параметры*/
		'slider_obj':false,
		'prev':false,
		'next':false,
		'visible_count':0,
		'current_slide':0,
		'slides_count':0,
		'wrapper':false,
		'wrapper_size':0,
		'ajax_pager':1,
		'container_size':0,
		'max_margin':0,
		'last_slide':0,
		'timer_interval':false,
		'timeout':false,
		'slide_size':0
	};


	/*Инициализация*/
	this.init=function(slider_obj,prop)
	{
		index=this.sliders_count++;
		prop=$.extend({},this.default_props,prop);
		this.sliders[index]=prop;
		prop.slider_obj=$(slider_obj).attr('slider_index',index);
		prop.prev=prop.slider_obj.find('._prev')
			.click({'index':index},function(e){if(!$(this).hasClass('_disabled'))_slider.slide(e.data.index,true)});
		prop.next=prop.slider_obj.find('._next')
			.click({'index':index},function(e){if(!$(this).hasClass('_disabled'))_slider.slide(e.data.index)});
		/*Движущийся блок*/
		wrapper=prop.slider_obj.find('._wrapper:first');
			prop.wrapper=wrapper.length
				?wrapper
				:prop.slider_obj.find('._slide').wrapAll('<div class="_wrapper"></div>').parent();

		/*Размер одного слайда*/
		slide=prop.wrapper.find('._slide:not(._prototype):first');
		prop.slide_size=(prop.vertical?slide.outerHeight(true):slide.outerWidth(true))*1;

		/*Размер контейнера*/
		prop.container_size=(prop.vertical)
			?prop.wrapper.parent().height()
			:prop.wrapper.parent().width();
		/*Количиство видимых слайдов за раз*/
		visible_count=Math.ceil(prop.container_size/prop.slide_size);
		prop.visible_count=visible_count>0?visible_count:1;
		this.setSize(index);
		this.setDisabled(index);
		this.autoSlide(index);
	};
	/*Заблокировать кнопки если нет скрытых салйдов*/
	this.setDisabled=function(index)
	{
		prop=this.sliders[index];
		if(!prop.carousel)
		{
			if(prop.current_slide==0)
				prop.prev.addClass('_disabled');
			else
				prop.prev.removeClass('_disabled');

			if(prop.current_slide>prop.last_slide)
				prop.next.addClass('_disabled');
			else
				prop.next.removeClass('_disabled');
		}
	};
	/*Определение размеров движущейся области и карусель */
	this.setSize=function(index)
	{
		prop=this.sliders[index];
		/*Имитация замкнутости*/
		if(prop.carousel)
		{
			slides=prop.slider_obj.find('._slide:not(._prototype)').filter('._carousel').remove().end();
			slides.last().after(slides.slice(0,prop.visible_count).clone().addClass('_carousel'));
		}
		slides=prop.wrapper.find('._slide:not(._prototype)');
		/*Размер движущейся области*/
		prop.wrapper_size=prop.slide_size*slides.length;
		if(prop.vertical)
			prop.wrapper.height(prop.wrapper_size);
		else
			prop.wrapper.width(prop.wrapper_size);
		prop.max_margin=prop.wrapper_size-prop.container_size;
		prop.slides_count=slides.not('._carousel').length;
		prop.last_slide=prop.slides_count-prop.visible_count;
		
	};
	/*Автопрокрутка*/
	this.autoSlide=function(index)
	{
		prop=this.sliders[index];
		if(prop.auto_slide)
			prop.timer_interval=setInterval('_slider.slide('+index+',0,1)',prop.auto_slide+prop.slide_time);
	};
	/*Прокрутить дальше/назад */
	this.slide=function(index,prev,auto)
	{
		prop=this.sliders[index];
		ind=prev?-1:1;
		if(!auto && prop.auto_slide)
		{
			if(prop.timer_interval)
			{
				clearInterval(prop.timer_interval);
				prop.timer_interval=false;
			}
			if(prop.timeout)
				clearTimeout(prop.timeout);
			prop.timeout=setTimeout('_slider.autoSlide('+index+')',10000);

		}

		this.slide_to(index,prop.current_slide+ind);
	};
	/*Прокрутить до слайда по индексу*/
	this.slide_to=function(index,slide_to)
	{
		prop=this.sliders[index];
		last=prop.slides_count-1;
		if(prop.carousel)
		{
			margin=false;
			if(slide_to>prop.slides_count)
			{
				margin='0';
				slide_to=1;
			}
			if(slide_to<0)
			{
				slide_to=prop.slides_count;
				margin='-'+prop.slide_size*slide_to-- +'px';
			}
			if(margin!==false)
				prop.wrapper.css('margin'+(prop.vertical?'Top':'Left'),margin);
		}
		else
		if(prop.timer_interval)
		{
			if(slide_to-2>=prop.last_slide)
				slide_to=0;
			if(slide_to<0)
				slide_to=last;
		}
		/*Если нужен аякс, клик кнопки дальше и последний слайд*/
		if(prop.ajax_load&& prop.current_slide<slide_to&& slide_to==prop.last_slide)
			$.post(prop.ajax_load,$.extend({'index':index,'pager':prop.ajax_pager++},prop.ajax_params),this.ajax_response);
		prop.current_slide=slide_to;
		margin=slide_to*prop.slide_size;
		margin=margin>prop.max_margin?prop.max_margin:margin;
		eval('p={"margin'+(prop.vertical?'Top':'Left')+'":"-'+margin+'px"}');
		if(!prop.courusel)
		prop.wrapper.stop().animate(p,prop.slide_time,prop.animation);
		this.setDisabled(index);
	};
	/*Ответ аякса с добавочными слайдами*/
	this.ajax_response=function(data)
	{
		eval(data);
		prop=_slider.sliders[data.index];
		if(prop.ajax_pager!=data.pager*1+1)
			return;
		if(!data.slides)
			prop.ajax_load=false;
		else
		{
			prop.wrapper.find('._slide:last').after(data.slides);
			_slider.setSize(data.index);
		}
		if(data.last_slide)
			prop.ajax_load=false;
	};
	/*tmp*/
	this.ind=0;
	this.change=function(ind)
	{
		if(!ind)
			ind=this.ind++;
		else this.ind=ind;
		ease=['easeInQuad', 'easeOutQuad', 'easeInOutQuad', 'easeInCubic', 'easeOutCubic', 'easeInOutCubic', 'easeInQuart', 'easeOutQuart', 'easeInOutQuart', 'easeInQuint', 'easeOutQuint', 'easeInOutQuint', 'easeInSine', 'easeOutSine', 'easeInOutSine', 'easeInExpo', 'easeOutExpo', 'easeInOutExpo', 'easeInCirc', 'easeOutCirc', 'easeInOutCirc', 'easeInElastic', 'easeOutElastic', 'easeInOutElastic', 'easeInBack', 'easeOutBack', 'easeInOutBack', 'easeInBounce', 'easeOutBounce', 'easeInOutBounce'];
		this.sliders[0].animation=ease[ind];
		return ease[ind]+' ' +ind;
	};
}
_slider=new Slider();


/* Спец. эффекты анимации
 *
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 *
 * Open source under the BSD License.
 *
 * Copyright © 2008 George McGinley Smith
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 *
 * Neither the name of the author nor the names of contributors may be used to endorse
 * or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
	def: 'easeOutQuad',
	swing: function (x, t, b, c, d) {
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeInQuad: function (x, t, b, c, d) {
		return c*(t/=d)*t + b;
	},
	easeOutQuad: function (x, t, b, c, d) {
		return -c *(t/=d)*(t-2) + b;
	},
	easeInOutQuad: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t + b;
		return -c/2 * ((--t)*(t-2) - 1) + b;
	},
	easeInCubic: function (x, t, b, c, d) {
		return c*(t/=d)*t*t + b;
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	},
	easeInOutCubic: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t + b;
		return c/2*((t-=2)*t*t + 2) + b;
	},
	easeInQuart: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t + b;
	},
	easeOutQuart: function (x, t, b, c, d) {
		return -c * ((t=t/d-1)*t*t*t - 1) + b;
	},
	easeInOutQuart: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
		return -c/2 * ((t-=2)*t*t*t - 2) + b;
	},
	easeInQuint: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t*t + b;
	},
	easeOutQuint: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t*t*t + 1) + b;
	},
	easeInOutQuint: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
		return c/2*((t-=2)*t*t*t*t + 2) + b;
	},
	easeInSine: function (x, t, b, c, d) {
		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
	},
	easeOutSine: function (x, t, b, c, d) {
		return c * Math.sin(t/d * (Math.PI/2)) + b;
	},
	easeInOutSine: function (x, t, b, c, d) {
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	},
	easeInExpo: function (x, t, b, c, d) {
		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
	},
	easeOutExpo: function (x, t, b, c, d) {
		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
	},
	easeInOutExpo: function (x, t, b, c, d) {
		if (t==0) return b;
		if (t==d) return b+c;
		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
	},
	easeInCirc: function (x, t, b, c, d) {
		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
	},
	easeOutCirc: function (x, t, b, c, d) {
		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
	},
	easeInOutCirc: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
	},
	easeInElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
	},
	easeOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	},
	easeInOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
	},
	easeInBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*(t/=d)*t*((s+1)*t - s) + b;
	},
	easeOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
	},
	easeInOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
	},
	easeInBounce: function (x, t, b, c, d) {
		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
	},
	easeOutBounce: function (x, t, b, c, d) {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	},
	easeInOutBounce: function (x, t, b, c, d) {
		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
});